hi im 14 years old and my basic story is one day i had hit my head on a bathroom cabinet on the edge rlly hard a few days later i would masterbate and get a sharp throbbing pain in the back of my head and the next week i noticed a lump on the left and right back side of my head above the ears they have not gotten any bigger or anything also these past 2 days iv had a really bad cough but no double vison no nausiea no vommiting or dizzenes or anything...doctor said its a cold but i think its more than that i really need advice ive been stressed for this 2 weeks??